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dc.contributor.authorViltres, Renier
dc.contributor.authorJonsson, Sigurjon
dc.contributor.authorRuch, Joel
dc.contributor.authorDoubre, Cécile
dc.contributor.authorReilinger, Robert
dc.contributor.authorFloyd, Michael
dc.contributor.authorOgubazghi, Ghebrebrhan
dc.identifier.citationViltres, R., Jónsson, S., Ruch, J., Doubre, C., Reilinger, R., Floyd, M., & Ogubazghi, G. (2020). Kinematics and deformation of the southern Red Sea region from GPS observations. Geophysical Journal International. doi:10.1093/gji/ggaa109
dc.description.abstractThe present-day tectonics of the southern Red Sea region is complicated by the presence of the overlapping Afar and southern Red Sea rifts as well as the uncertain kinematics and extent of the Danakil block in between. Here we combine up to 16 years of GPS observations and show that the coherent rotation of the Danakil block is well described by a Danakil-Nubia Euler pole at 16.36○N, 39.96○E with a rotation rate of 2.83 ○/My. The kinematic block modeling also indicates that the Danakil block is significantly smaller than previously suggested, extending only to Hanish-Zukur Islands (∼13.8○N) with the area to the south of the islands being a part of the Arabian plate. In addition, the GPS velocity field reveals a wide inter-rifting deformation zone across the northern Danakil-Afar rift with ∼5.6 mm/yr of east-west opening across Gulf of Zula in Eritrea. Together the results redefine some of the plate boundaries in the region and show how the extension in the southern Red Sea gradually moves over to the Danakil-Afar rift.
dc.description.sponsorshipWe thank Yacob Tesfamariem, Abiel Yacob and Habtom Fessehaye (all at the Eritrea Institute of Technology) for their help with the 2016 GPS campaign in Eritrea. We also thank Elias Lewi (Addis Ababa University) for GPS data from Ethiopia and Daniele Trippanera (KAUST) for useful discussions. Editor Duncan Agnew and reviewers Cynthia Ebinger and Charles DeMets provided constructive comments on an earlier version of the manuscript. This research was supported by King Abdullah University of Science and Technology (KAUST), under award number OSR-2015-CRG4-2643.
dc.publisherOxford University Press (OUP)
dc.rightsThis is a pre-copyedited, author-produced PDF of an article accepted for publication in Geophysical Journal International following peer review. The version of record is available online at:
dc.titleKinematics and deformation of the southern Red Sea region from GPS observations
dc.contributor.departmentCrustal Deformation and InSAR Group
dc.contributor.departmentEarth Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalGeophysical Journal International
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Earth Sciences, University of Geneva, Switzerland
dc.contributor.institutionInstitut de Physique du Globe de Strasbourg, UMR 7516, Université de Strasbourg/EOST, CNRS, 5 rue René Descartes, F-67084 Strasbourg Cedex, France
dc.contributor.institutionDepartment of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
dc.contributor.institutionDepartment of Earth Sciences, Eritrea Institute of Technology, Asmara, Eritrea
kaust.personViltres, Renier
kaust.personJonsson, Sigurjon
kaust.personRuch, Joel

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